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+-- C974010.A
+--
+-- Grant of Unlimited Rights
+--
+-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
+-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
+-- unlimited rights in the software and documentation contained herein.
+-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
+-- this public release, the Government intends to confer upon all
+-- recipients unlimited rights equal to those held by the Government.
+-- These rights include rights to use, duplicate, release or disclose the
+-- released technical data and computer software in whole or in part, in
+-- any manner and for any purpose whatsoever, and to have or permit others
+-- to do so.
+--
+-- DISCLAIMER
+--
+-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
+-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
+-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
+-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
+-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
+-- PARTICULAR PURPOSE OF SAID MATERIAL.
+--*
+--
+-- OBJECTIVE:
+-- Check that the abortable part of an asynchronous select statement
+-- is not started if the triggering statement is a task entry call to
+-- a task that has already terminated.
+--
+-- Check that Tasking_Error is properly propagated to the asynchronous
+-- select statement and thus the sequence of statements of the triggering
+-- alternative is not executed after the abortable part is left.
+--
+-- Check that Tasking_Error is re-raised immediately following the
+-- asynchronous select.
+--
+-- TEST DESCRIPTION:
+--
+-- Use a small subset of the base Automated Teller Machine simulation
+-- which is shown in greater detail in other tests of this series.
+-- Declare a main procedure containing an asynchronous select with a task
+-- entry call as triggering statement. Ensure that the task is
+-- terminated before the entry call. Use stripped down versions of
+-- the called procedures to check the correct path in the test.
+--
+--
+-- CHANGE HISTORY:
+-- 06 Dec 94 SAIC ACVC 2.0
+--
+--!
+
+package C974010_0 is -- Automated teller machine abstraction.
+
+
+ Transaction_Canceled : exception;
+
+ type Key_Enum is (None, Cancel, Deposit, Withdraw);
+
+ type Card_Number_Type is private;
+ type Card_PIN_Type is private;
+ type ATM_Card_Type is private;
+
+ task type ATM_Keyboard_Task is
+ entry Cancel_Pressed;
+ end ATM_Keyboard_Task;
+
+
+ procedure Validate_Card (Card : in ATM_Card_Type);
+
+ procedure Perform_Transaction (Card : in ATM_Card_Type);
+
+
+private
+
+ type Card_Number_Type is range 1 .. 9999;
+ type Card_PIN_Type is range 100 .. 999;
+
+ type ATM_Card_Type is record
+ Number : Card_Number_Type;
+ PIN : Card_PIN_Type;
+ end record;
+
+end C974010_0;
+
+
+ --==================================================================--
+
+
+with Report;
+package body C974010_0 is
+
+
+
+ -- One of these gets created as "Keyboard" for each transaction
+ --
+ task body ATM_Keyboard_Task is
+ TC_Suicide : exception;
+ Key_Pressed : Key_Enum := None;
+ begin
+ raise TC_Suicide; -- Simulate early, unexpected termination
+
+ accept Cancel_Pressed do -- queued entry call.
+ null; --:::: user code for cancel
+
+ end Cancel_Pressed;
+
+ exception
+ when TC_Suicide =>
+ null; -- This is the expected test behavior
+ when others =>
+ Report.Failed ("Unexpected Exception in ATM_Keyboard_Task");
+ end ATM_Keyboard_Task;
+
+ procedure Validate_Card (Card : in ATM_Card_Type) is
+ begin
+ Report.Failed ("Abortable part was executed");
+ end Validate_Card;
+
+
+ procedure Perform_Transaction (Card : in ATM_Card_Type) is
+ begin
+ Report.Failed ("Exception not re-raised immediately following " &
+ "asynchronous select");
+ end Perform_Transaction;
+
+
+end C974010_0;
+
+
+ --==================================================================--
+
+
+with Report;
+with ImpDef;
+
+with C974010_0; -- Automated teller machine abstraction.
+use C974010_0;
+
+procedure C974010 is
+
+ Card_Data : ATM_Card_Type;
+ TC_Tasking_Error_Handled : Boolean := false;
+
+begin -- Main program.
+
+ Report.Test ("C974010", "Asynchronous Select: Trigger is a call to a " &
+ "task entry of a task that is already completed");
+
+
+ declare
+ -- Create the task for this transaction
+ Keyboard : C974010_0.ATM_Keyboard_Task;
+ begin
+
+ -- Ensure the task is already completed before calling
+ --
+ while not Keyboard'terminated loop
+ delay ImpDef.Minimum_Task_Switch;
+ end loop;
+
+ -- --
+ -- Asynchronous select is tested here --
+ -- --
+
+ select
+
+ Keyboard.Cancel_Pressed;
+
+ raise Transaction_Canceled; -- Should not be executed.
+
+ then abort
+
+ -- Since the triggering call is not queued the abortable part
+ -- should not be executed.
+ --
+ Validate_Card (Card_Data);
+
+ end select;
+ --
+ -- The propagated exception is re-raised here.
+
+ Perform_Transaction(Card_Data); -- Should not be reached.
+
+ exception
+ when Transaction_Canceled =>
+ Report.Failed ("Triggering alternative sequence of statements " &
+ "executed");
+ when Tasking_Error =>
+ -- This is the expected test path
+ TC_Tasking_Error_Handled := true;
+ when others =>
+ Report.Failed ("Wrong exception raised: ");
+ end;
+
+
+ if not TC_Tasking_Error_Handled then
+ Report.Failed ("Tasking_Error not properly propagated");
+ end if;
+
+ Report.Result;
+
+exception
+ when Tasking_Error =>
+ Report.Failed ("Tasking_Error propagated to wrong handler");
+ Report.Result;
+
+
+end C974010;